Anthea: I removed photo of mad murderer
A man has been killed in a machete attack and two suspects shot by police in Woolwich, south-east London.
Prime Minister David Cameron said there were "strong indications that it is a terrorist incident" and the UK would "never buckle" in the face of such attacks.
Footage has emerged showing a man wielding a bloodied meat cleaver and making political statements.
There are unconfirmed reports that the dead man was a soldier.
Both French President Francois Hollande and MP Nick Raynsford said the dead man had been a soldier at Woolwich barracks.
The footage shown on the ITV website shows a man, speaking to the camera, saying: "We must fight them as they fight us. An eye for an eye, a tooth for a tooth."
He added: "I apologise that women have had to witness this today, but in our land our women have to see the same. You people will never be safe. Remove your government, they don't care about you."
Home Secretary Theresa May said she had been briefed by the director general of Security Service MI5, Andrew Parker, and Metropolitan Police Commissioner Bernard Hogan-Howe on the "sickening and barbaric" attack.
Mr Cameron said Britain had faced "these sort of attacks", adding: "We will never buckle in the face of them.
"People across Britain, people in every community, I believe, will utterly condemn this attack."
He expressed sympathy for the victim and his family, saying: "It is the most appalling crime. We are obviously seeking, and the police are urgently seeking, the full facts about this case."
One witness, identified only as James, said two men had attacked another man, aged about 20, who was wearing a T-shirt of military charity Help for Heroes.
"These two guys were crazed. They were just animals. They dragged him from the pavement and dumped his body in the middle of the road and left his body there," he told LBC radio.
He said after the "horrendous" attack, the two men, who were also in their 20s, stood around, waving knives and a gun, and asked people to take pictures of them "as if they wanted to be on TV or something".
"They were oblivious to anything, they were more worried about having their photo taken, running up and down the road," he said.
Thomas, a witness who contacted the BBC, said: "I got there minutes after it happened because you could hear gunshots from Woolwich High Street.
"Basically two men carried out an axe attack on a young army cadet walking along the street, by the looks of things the police responded and then shot them in front of the public, at the same time I couldn't really tell if the cadet was fatally or not hurt as police were crowded around him."
According to senior Whitehall sources the people carrying out the attack were heard to say: "Allahu Akbar [God is Great]", BBC political editor Nick Robinson reported.
On Twitter, the Mayor of London Boris Johnson described the attack as a "sickening deluded and unforgivable act of violence".
http://www.bbc.co.uk/news/uk-22630303
non-BBC video
